Question 1511
{"accessible":true,"alternatives":[{"id":7547,"text":"1. aortic isthmus, 2. trachea, 3. pulmonary artery, 4. superior vena cava"},{"id":7549,"text":"1. pulmonary artery, 2. trachea, 3. aortic isthmus, 4. inferior vena cava"},{"id":7550,"text":"1. pulmonary artery, 2. trachea, 3. aortic isthmus, 4. superior vena cava"},{"id":7548,"text":"1. pulmonary artery, 2. trachea, 3. branch pulmonary artery, 4. inferior vena cava"}],"archived":false,"correctAlternativeId":7550,"explanation":"\u003cp\u003eIn the image the aortic isthmus is on the right side of the trachea, leading to the u-shaped appearance seen with right sided aortic arch.\u003c/p\u003e","id":1511,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/91/Radiopaedia_First_Trimester_Questions_-_Google_Slides.jpg","imageAttribution":{"kind":"own","user_id":128,"user_param":"drjermy","user_name":"Jeremy Jones"},"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1511","nextQuestionPath":null,"relatedArticles":[],"alsoUsedIn":[{"id":250,"kind":"Course","title":"The 11-13 week scan in the era of NIPT","link":"https://radiopaedia.org/courses/the-11-13-week-scan-in-the-era-of-nipt"},{"id":607,"kind":"Course","title":"Lectures by Sumathi Rajendran - page 607","link":"https://radiopaedia.org/courses/lectures-by-sumathi-rajendran/pages/607"},{"id":607,"kind":"Course","title":"Radiopaedia 2020 - Lectures Only - page 607","link":"https://radiopaedia.org/courses/radiopaedia-2020-exclusive/pages/607"},{"id":607,"kind":"Course","title":"Obstetrics \u0026 Gynaecology Lectures - page 607","link":"https://radiopaedia.org/courses/obgyn-lectures/pages/607"},{"id":607,"kind":"Course","title":"2020 Virtual Conference Private Use - page 607","link":"https://radiopaedia.org/courses/2020-virtual-conference-private-use/pages/607"}],"stem":"\u003cp\u003eWhat are the numbered structures in this image?\u003c/p\u003e","menuLinks":[{"text":"Report problem with question","url":"https://docs.google.com/forms/d/e/1FAIpQLSfO3soWYhOjJ7yErSysyCe5V4A1CqW7WK3rDA7MtAkecMGqNw/viewform?entry.1624461248\u0026entry.553583435=https://radiopaedia.org/questions/1511"}],"attemptsPercentages":[{"alternativeId":"7548","percentage":9},{"alternativeId":"7547","percentage":24},{"alternativeId":"7549","percentage":18},{"alternativeId":"7550","percentage":49}],"promptToLogin":false,"questionManager":false,"articleId":"fetal-circulation"}